Gastrointestinal Physiological Conditions in Obesity and After Bariatric Surgery

NCT ID: NCT03783052

Last Updated: 2022-10-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-02-01

Study Completion Date

2021-03-30

Brief Summary

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Over the years, obesity has become a major public health concern. The increasing rates of obesity are associated with an enhanced demand for weight-loss with bariatric surgery as a treatment option. Bariatric surgery procedures alter the anatomical structure of the gastrointestinal tract, which contributes to the postoperative weight loss. However, it is not sure how obesity and the anatomical alterations of bariatric surgery affect the gastrointestinal physiology including gastrointestinal pH, gastric emptying, intestinal transit time and concentration of enzymes.

Detailed Description

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During the visit in the obesity clinic, eligible patients will be approached for participation by the sub-investigator. Interested patients will receive information regarding the study and receive the information sheet containing the informed consent form. After signing the informed consent form, volunteers will be invited to come to the clinical research center:

* Healthy volunteers: Gastrointestinal physiology will be analyzed during two visits using a telemetric capsule. During the first visit, the physiological conditions of interest will be analysed in fasted state using the telemetric capsule. During the second visit, the physiological conditions of interest will be analysed in fed state using the telemetric capsule.
* Obese volunteers: Gastrointestinal physiology will be analyzed during two visits using a telemetric capsule. During the first visit, the physiological conditions of interest will be analysed in fasted state using the telemetric capsule. During the second visit, the physiological conditions of interest will be analysed in fed state using the telemetric capsule.
* Obese volunteers: Gastrointestinal physiology will be analyzed during three visits using a telemetric capsule, scintigraphy and via the collection of gastrointestinal samples. During the first visit, the physiological conditions of interest will be analysed in fasted state using the telemetric capsule. During the second visit, gastrointestinal samples will be collected at the level of the stomach, the duodenum and jejunum via aspiration through multiple lumen catheters in fasted and fed state. During the third visit, gastric emptying will be observed via scintigraphy in fed state.
* Volunteers after Sleeve Gastrectomy: Gastrointestinal physiology will be analyzed during three visits using a telemetric capsule, scintigraphy and via the collection of gastrointestinal samples. During the first visit, the physiological conditions of interest will be analysed in fasted state using the telemetric capsule. During the second visit, gastrointestinal samples will be collected at the level of the sleeve, the duodenum and jejunum via aspiration through multiple lumen catheters in fasted and fed state. During the third visit, gastric emptying will be observed via scintigraphy in fed state.
* Volunteers after Roux-en-Y gastric Bypass: Gastrointestinal physiology will be analyzed during three visits using a telemetric capsule, scintigraphy and via the collection of gastrointestinal samples. During the first visit, the physiological conditions of interest will be analysed in fasted state using the telemetric capsule. During the second visit, gastrointestinal samples will be collected at the level of the pouch, the Roux limb and the common limb via aspiration through multiple lumen catheters in fasted and fed state. During the third visit, gastric emptying will be observed via scintigraphy in fed state.

Conditions

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Obesity Bariatric Surgery Candidate

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Healthy volunteers

11 Healthy volunteers

Group Type OTHER

SmartPill in fasted state

Intervention Type DEVICE

SmartPill administration in fasted state

SmartPill in fed state

Intervention Type DEVICE

SmartPill administration in fed state

Obese volunteers

11 Obese Volunteers

Group Type OTHER

SmartPill in fasted state

Intervention Type DEVICE

SmartPill administration in fasted state

SmartPill in fed state

Intervention Type DEVICE

SmartPill administration in fed state

Roux-en-Y Gastric Bypass patients

6 volunteers with a Roux-en-Y Gastric Bypass

Group Type OTHER

SmartPill in fasted state

Intervention Type DEVICE

SmartPill administration in fasted state

Aspiration

Intervention Type OTHER

Aspiration of gastrointestinal samples in fasted and fed state

Gastric emptying scintigraphy

Intervention Type OTHER

Gastric emptying scintigraphy in fed state

Sleeve Gastrectomy patients

6 volunteers with a Sleeve Gastrectomy

Group Type OTHER

SmartPill in fasted state

Intervention Type DEVICE

SmartPill administration in fasted state

Aspiration

Intervention Type OTHER

Aspiration of gastrointestinal samples in fasted and fed state

Gastric emptying scintigraphy

Intervention Type OTHER

Gastric emptying scintigraphy in fed state

Volunteers with obesity

6 obese volunteers

Group Type OTHER

SmartPill in fasted state

Intervention Type DEVICE

SmartPill administration in fasted state

Aspiration

Intervention Type OTHER

Aspiration of gastrointestinal samples in fasted and fed state

Gastric emptying scintigraphy

Intervention Type OTHER

Gastric emptying scintigraphy in fed state

Interventions

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SmartPill in fasted state

SmartPill administration in fasted state

Intervention Type DEVICE

SmartPill in fed state

SmartPill administration in fed state

Intervention Type DEVICE

Aspiration

Aspiration of gastrointestinal samples in fasted and fed state

Intervention Type OTHER

Gastric emptying scintigraphy

Gastric emptying scintigraphy in fed state

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

\- 18 years or older

Exclusion Criteria

* History of gastric ulcers
* Disorders of swallowing
* Suspected strictures, fistulas or physiological GI obstruction.
* GI surgery within past three months
* Severe dysphagia to food or pills
* Crohns disease or diverticulitis
* Use of implanted or portable electro-mechanical medical devices
* Known intolerance to the SmartPill device
* Known food allergies to any component of the meal
* History of multiple bariatric surgeries
* Pregnant or lactating women
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Universitaire Ziekenhuizen KU Leuven

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Bart Van der Schueren, PhD

Role: PRINCIPAL_INVESTIGATOR

UZ Leuven, Department of Endocrinology

Locations

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UZ Leuven

Leuven, , Belgium

Site Status

Countries

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Belgium

Other Identifiers

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S60930

Identifier Type: -

Identifier Source: org_study_id

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